Running graphics together.

I have an R7 series on board and a r7 200 series card: how can I get them to work together?

I am currently updating hardware and software and thought I would tackle this now.

I am using an Acer Aspire T, AMD A8 7600 APU, 16 gb ddr3 ram and a 500 gb SSD - if any o this matters. Also, there aren't any options in 'BIOS' to change graphics - actually, there isn't much in BIOS but wasted space and the boot order. And, there aren't any options for much of anything in the Radeon Settings (is it possible to get a driver without it?). I miss the Catalyst Control Centre and the many display adjustments (color, hue etc . . .).

I have come to a stand still. Assuming A8 – 76x0 includes A8 7600 APU, which matches my R7 240, and I'm not missing an alternate Radeon Settings (version 18.11.2) or Catalyst Control Centre (version 2015.0804.21.41908), I can't switch to dual graphics. I browsed for my motherboard, an Acer TC-220 (the serial number really didn't help), and came up empty; if it is a motherboard issue, well, that's that.

Anyway, the person who bought the graphics card did so after reading the AMD Desktop Dual Graphics Solutions and finding the card best suited to my APU graphics, which would allow for dual graphics. Regardless of this failure, the card is much better than what I had.

If there are any last minute solutions, I'd be grateful. Otherwise I will leave the topic alone - before I lose it. Frustration . . .